you can not put the responsibility for a child doing what innocent children do --- " don't know what to tell you. Your daughter knew she shouldn't do this. She will forever remember why especially when her action led to the behavior that causes the dogs death. "
Not the child's action , how wrong to blame the victim"

This was a dog with known anti social behaviour . "She is so anxious and skittish as it is, and I would not trust her in being around other people or kids" But you did .

just a terrible situation. I hope and prey that your daughter is okay .